Interferometers
US4802736A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1986 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | Dec 11, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/32
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An interferometer which comprises: (1) a single, coherent light source; (2) a first converging lens positioned on the optical axis of said coherent light source; (3) a beam-splitting arrangement positioned on said optical axis and spaced from said first converging lens by a distance greater than the focal length of said lens; (4) a second converging lens positioned on said lens; (4) a second converging lens positioned on said optical axis to receive and to focus the two beams emanating in use from the beam-splitting arrangement; and (5) a mirror arrangement positioned so that the beams focussed by said second converging lens impinge on the mirror system and so that the reflected beams are brought to intersect at a focal point and with a large angle between the principal rays of the two beams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.